Tripodean, Terror of The Deep

{t}{4}{u}-Tap up to 4 creatures, they don't
untap during their controller's untap step
{5}{u}-Exile up to 4 non creature, non land permanents
{t}{x}-Exile up to x taped permanents
It released it's might roar from the depth of the ocean, and even the god's above trembled in terror